<table width="100%" align="center">
    <tr>
        <td>
        <center>
        <% form_tag search_groups_path, :id => "group_search", :method => :get do -%>
        <input name="q" type="text" size="25" maxlength="72" value="<%= params[:q]%>" id="page_focus"/>
        </center>
        <center>
        <%= submit_tag '搜索小组', :name => "g_submit"%>
        <%= submit_tag '搜索话题', :name => "p_submit"%>
        </center>
        <% end -%>
        </td>
    </tr>
</table>